At risk of coming off as an old fuddy-duddy to Mark Cuban's cool hip dude ... why can't Cuban stay off Charlie Sheen's lawn?

I mean, honestly. WTF?

Cuban is the charismatic, brilliant owner of the Dallas Mavericks, HDNet and whatever else he wants to buy, assuming it's not a Major League Baseball team. Since those folks won't let Cuban into their club. Cuban has money and smarts, and he's a thinker and a dreamer.

I can't sit here and tell you what's wrong with Charlie Sheen. I just know something is. Chemical, mental, spiritual. Feline leukemia maybe, what with all that #TigerBlood.

Sheen is a ratings machine. I get that. Hell, I contribute to that. Show me a TV show with him on it. Show me a radio show. Show me a Twitter feed. I'll watch. I'll listen. I'll read. The guy's fascinating.

He's also troubled. Beyond troubled, is my guess.

And Mark Cuban wants to tap into that trouble for some revenue of his own? You have enough money, Cuban.

But firing Avery Johnson was a stupid knee-jerk reaction to a problem that wasn't of Johnson's creation. Unless it turns out that Johnson was the primary force behind the season-killing trade of Devin Harris for Jason Kidd, he just took the fall for the Dallas front office, which thought older-and-slower was the best way to win the wicked West. New Orleans' Chris Paul blew a hole in that theory, running circles around decrepit Kidd, and Avery Johnson is the one who pays with a pink slip?

Unacceptable. Avery Johnson didn't go from coaching savant to idiot overnight. But if there's any karma in the NBA, the Mavericks will go from the playoffs to the lottery as quickly as Johnson went from coach of the year to unemployment.

Who's next in Dallas? No clue, but I hear Louisville's Rick Pitino has had his eye on an NBA return for some time. Neither side will confirm this -- in fact Pitino's spokesman flatly denies it -- but I've been told by multiple sources on the periphery that a representative of Pitino spoke with the Miami Heat about their recent opening. Don't be surprised if Pitino speaks with Cuban about this one.

This story asks if the Falcons have the worst group of quarterbacks in the NFL. I'd take it one step farther and ask, in all seriousness, do the Falcons have the worst set of quarterbacks in NFL history? These guys completely suck.